| // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_ |
| #define CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_ |
| |
| #include <string> |
| |
| #include "base/singleton.h" |
| #include "base/message_loop.h" |
| |
| // This is the base class for singleton objects which crash dump renderers and |
| // plugins on Linux. We perform the crash dump from the browser because it |
| // allows us to be outside the sandbox. |
| // |
| // PluginCrashHandlerHostLinux and RendererCrashHandlerHostLinux are singletons |
| // that handle plugin and renderer crashes, respectively. |
| // |
| // Processes signal that they need to be dumped by sending a datagram over a |
| // UNIX domain socket. All processes of the same type share the client end of |
| // this socket which is installed in their descriptor table before exec. |
| class CrashHandlerHostLinux : public MessageLoopForIO::Watcher, |
| public MessageLoop::DestructionObserver { |
| public: |
| // Get the file descriptor which processes should be given in order to signal |
| // crashes to the browser. |
| int GetDeathSignalSocket() const { |
| return process_socket_; |
| } |
| |
| // MessagePumbLibevent::Watcher impl: |
| virtual void OnFileCanWriteWithoutBlocking(int fd); |
| virtual void OnFileCanReadWithoutBlocking(int fd); |
| |
| // MessageLoop::DestructionObserver impl: |
| virtual void WillDestroyCurrentMessageLoop(); |
| |
| protected: |
| CrashHandlerHostLinux(); |
| ~CrashHandlerHostLinux(); |
| // This is here on purpose to make CrashHandlerHostLinux abstract. |
| virtual void SetProcessType() = 0; |
| |
| std::string process_type_; |
| |
| private: |
| void Init(); |
| |
| int process_socket_; |
| int browser_socket_; |
| MessageLoopForIO::FileDescriptorWatcher file_descriptor_watcher_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CrashHandlerHostLinux); |
| }; |
| |
| class PluginCrashHandlerHostLinux : public CrashHandlerHostLinux { |
| private: |
| friend struct DefaultSingletonTraits<PluginCrashHandlerHostLinux>; |
| PluginCrashHandlerHostLinux() { |
| SetProcessType(); |
| } |
| ~PluginCrashHandlerHostLinux() {} |
| |
| virtual void SetProcessType() { |
| process_type_ = "plugin"; |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(PluginCrashHandlerHostLinux); |
| }; |
| |
| class RendererCrashHandlerHostLinux : public CrashHandlerHostLinux { |
| private: |
| friend struct DefaultSingletonTraits<RendererCrashHandlerHostLinux>; |
| RendererCrashHandlerHostLinux() { |
| SetProcessType(); |
| } |
| ~RendererCrashHandlerHostLinux() {} |
| |
| virtual void SetProcessType() { |
| process_type_ = "renderer"; |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(RendererCrashHandlerHostLinux); |
| }; |
| |
| #endif // CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_ |